import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login'
import Home from '../components/Home'
import Welcome from '../components/Welcome'
import Users from '../components/user/Users'
import Rights from '../components/power/Rights'
import Roles from '../components/power/Roles'
import Category from '../components/goods/Category'
import Params from "../components/goods/Params"
import List from "../components/goods/List"
import Add from "../components/goods/Add"
import Order from "../components/order/Order"
import Report from "../components/report/Report"


Vue.use(VueRouter)

const routes = [
  // {
  //   path: '/',
  //   name: 'Home',
  //   component: Home
  // },
  // {
  //   path: '/about',
  //   name: 'About',
  //   // route level code-splitting
  //   // this generates a separate chunk (about.[hash].js) for this route
  //   // which is lazy-loaded when the route is visited.
  //   component: () => import(/* webpackChunkName: "about" */ '../views/About.vue')
  // }
  {
    path: '/',
    redirect: '/login' // 路由重定向，访问/的时候定向到/login
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home,
    redirect: '/welcome',
    children: [
      {
        path: '/welcome',
        component: Welcome
      },
      {
        path: '/users',
        component: Users
      },
      {
        path: '/rights',
        component: Rights
      },
      {
        path: '/roles',
        component: Roles
      },
      {
        path: '/categories',
        component: Category
      },
      {
        path: '/params',
        component: Params
      },
      {
        path: '/goods',
        component: List
      },
      {
        path: '/goods/add',
        component: Add
      },
      {
        path: '/orders',
        component: Order
      },
      {
        path: '/reports',
        component: Report
      },
    ]
  }
  
]

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径 from代表从哪个路径过来 next是一个函数
  // next() 表示直接放行 next('/login')表示强制跳转
  if(to.path === '/login'){
    return next();
  }else{
    // 获取token
    const token = window.sessionStorage.getItem("token");
    if(!token){
      return next('/login');
    }else{
      next();
    }
  }
})

export default router
